Medical bending adjusting catheter testing tool and testing method thereof

Abstract

The invention discloses a medical bend-adjusting catheter testing tool and a testing method thereof.The medical bend-adjusting catheter testing tool comprises a workbench, a testing frame is arranged at the top of the workbench and comprises a base, the base is installed in the middle of the top of the workbench, a head plate is installed at one end of the top of the base, and a tail plate is installed at the other end of the top of the base; the end, close to the tail plate, of the top of the base is provided with a body plate, the middle of the head plate, the middle of the tail plate and the middle of the body plate are each provided with a guide sleeve used for allowing a guide pipe to penetrate through, and the three guide sleeves are located on the same central axis. According to the invention, the 360-degree protractor and the 180-degree protractor on the head plate can respectively detect the deformation of the bending section of the catheter in the Y-axis direction and the X-axis direction, and the 180-degree protractor near the body plate is used for detecting the bending degree of the catheter body. The catheter deformation attitude information cannot be comprehensively and accurately obtained, and the test comprehensiveness and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical product testing, in particular to a medical bending catheter testing tool and a testing method thereof. BACKGROUND

[0002] The medical bending catheter is an important instrument widely used in the medical field. It has the characteristics of adjustable bending, and can flexibly change its bending shape according to different medical operations and treatment needs, so as to accurately reach the target site in the human body, provide convenience for operation and treatment, and is widely used in cardiovascular intervention, neural intervention and other medical scenes.

[0003] However, the existing testing devices have certain limitations in testing the medical bending catheter. For example, a delivery system bending tube testing device disclosed in publication No. CN223051029U belongs to the technical field of medical instruments. The device includes a base, a positioning unit, an angle measuring unit and an adjusting unit; the positioning unit, the angle measuring unit and the adjusting unit are arranged on the base; the positioning unit is used for positioning the measured bending tube, and the angle measuring unit is used for measuring the bending angle of the adjustable bending part of the measured bending tube; the adjusting unit is connected with the adjustable bending part of the measured bending tube through a traction member, and the adjusting unit is used to drive the traction member to move, so as to bend the adjustable bending part; a force measuring assembly is arranged between the adjusting unit and the traction member, and the force measuring assembly is used to obtain the tension data of the traction member during the bending of the adjustable bending part of the measured bending tube. This delivery system bending tube testing device can represent the relationship between the bending force and the bending angle of the measured bending tube during the bending process. However, in this device, the catheter is placed on the platform, and the deformation in the Y-axis direction cannot be detected, so it is difficult to obtain the catheter deformation posture information comprehensively and accurately.

[0004] For another example, a medical catheter testing device and a testing method thereof are disclosed in publication No. CN119023467B, which includes a machine table, a catheter clamping assembly linearly arranged on the machine table, a first visual detection assembly arranged parallel to the catheter clamping assembly on one side, a wire tension detection assembly arranged at the wire pulling end of the catheter, a bending force detection assembly arranged on one side of the bending section of the catheter, and a second visual detection assembly arranged at the end of the catheter. The machine table is also provided with a PLC controller and a data acquisition and analysis module for receiving test results and providing control signals. The PLC controller is connected with a control panel and a display panel to test the fatigue degree of the catheter. However, this device also has limitations. Since the catheter is placed on the platform, the deformation posture of the catheter cannot be detected from three-dimensional perspective, and the detection of the performance of the catheter is not comprehensive enough.

[0005] Therefore, it is necessary to invent a medical bending catheter testing tool and a testing method thereof to solve the above problems. SUMMARY

[0006] The present application aims to provide a medical bending catheter testing tool and its testing method to solve the problems in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present application provides the following technical solution: a medical bending catheter testing tool, comprising a workbench, a testing frame is arranged on the top of the workbench, the testing frame comprises a base, the base is installed in the middle of the top of the workbench, one end of the top of the base is installed with a head plate, the other end of the top of the base is installed with a tail plate, one end of the top of the base close to the tail plate is installed with a body plate, a guide sleeve for threading the catheter is installed in the middle of the head plate, the tail plate and the body plate, the three guide sleeves are located on the same central axis, a 360-degree protractor is installed on the surface of the head plate, which can be used for threading the catheter, a 180-degree protractor is installed on the surface of the base close to the head plate, and a 180-degree protractor is also installed on the surface of the base close to the body plate.

[0008] Preferably, the guide sleeve in the middle of the head plate is used for threading the bending section of the catheter, when the bending section of the catheter is bent, the deformation in the X-axis direction can be detected by the 180-degree protractor, and the deformation in the Y-axis direction can be detected by the 360-degree protractor.

[0009] Preferably, the guide sleeve in the middle of the body plate is used for threading the middle section of the catheter, and the bending degree of the catheter body can be detected by the 180-degree protractor.

[0010] Preferably, the tail plate is used for positioning the pull line end of the catheter, an electronic tension meter is arranged above the workbench close to the tail plate, the electronic tension meter is used for pulling the pull line to control the bending of the catheter, a tension sensor is electrically connected to the working end of the electronic tension meter, the tension sensor can measure the tension value and transmit it to the electronic tension meter, a flexible film pressure sensor is arranged above the workbench close to the head plate, the flexible film pressure sensor is pasted on the surface of the bending section of the catheter, and is used for detecting the bending force of the catheter.

[0011] Preferably, the top of the workbench is installed with a controller, a first visual detection assembly, a second visual detection assembly and a third visual detection assembly, the electronic tension meter, the flexible film pressure sensor, the first visual detection assembly, the second visual detection assembly and the third visual detection assembly are electrically connected to the controller.

[0012] Preferably, the detection head of the first visual detection assembly is located directly above the 180-degree protractor close to the head plate, which is convenient for recording the deformation of the bending section of the catheter in the X-axis direction, at the same time, the first visual detection assembly transmits the recorded data to the controller.

[0013] Preferably, the detection head of the second visual detection assembly is arranged opposite the center of the 360-degree protractor, facilitating the recording of the deformation of the bending section of the catheter in the Y-axis direction, and the second visual detection assembly transmits the recorded data to the controller.

[0014] Preferably, the detection head of the third visual detection assembly is arranged above the 180-degree protractor close to the body plate, facilitating the recording of the bending degree of the catheter body, and the third visual detection assembly transmits the recorded data to the controller.

[0015] Preferably, the controller is integrated with a liquid crystal display screen, which is used to display the data transmitted by the electronic tensile meter, the flexible film pressure sensor, the first visual detection assembly, the second visual detection assembly and the third visual detection assembly, and the controller can construct a closed-loop database from the collected multi-dimensional data such as bending angle, deformation retention capacity, bending force and bending stroke through its built-in program.

[0016] In another aspect, the application also provides a testing method of a medical bending catheter testing tool, which adopts the medical bending catheter testing tool described above and includes the following steps: S1: passing the catheter through the guide sleeve in the middle of the tail plate and the body plate, driving the catheter to bend by pulling the pull wire through the electronic tensile meter, and recording the bending degree of the catheter body through the third visual detection assembly; S2: passing the bending section of the catheter through the guide sleeve in the middle of the head plate, and pasting the flexible film pressure sensor on the surface of the bending section of the catheter; S3: driving the bending section of the catheter to bend by pulling the pull wire through the electronic tensile meter, recording the deformation of the bending section of the catheter in the X-axis and Y-axis directions through the first visual detection assembly and the second visual detection assembly, and detecting the bending force through the flexible film pressure sensor; S4: the controller constructs a closed-loop database from the collected multi-dimensional data such as bending angle, deformation retention capacity, bending force and bending stroke through its built-in program, and can set the optimal parameter range according to the feedback of the user, facilitating the detection and optimization of the product.

[0017] In the above technical solution, the application provides the following technical effects and advantages: 1. By reasonably arranging the test frame, protractor, electronic tensile tester, flexible film pressure sensor and a plurality of visual detection components on the workbench, the deformation posture detection of the medical bending guide tube in three-dimensional space is realized, specifically, the 360-degree protractor and the 180-degree protractor on the head plate can detect the deformation of the bending section of the guide tube in the Y-axis and X-axis directions respectively, and the 180-degree protractor near the body plate is used to detect the bending degree of the guide tube body, which overcomes the limitation that the guide tube is placed on the platform in the prior art, and cannot comprehensively and accurately obtain the deformation posture information of the guide tube, and improves the comprehensiveness and accuracy of the test. 2. The multi-dimensional data collected is constructed into a closed-loop database through the built-in program of the controller, which not only improves the efficiency of data processing and storage, but also sets the best parameter range according to the feedback of the user, so as to facilitate the detection and optimization of the product. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the present application before testing the guide tube; Figure 2 It is the overall structure schematic diagram of the present application when testing the bending section of the guide tube; Figure 3 It is the overall structure schematic diagram of the present application when testing the guide tube body; Figure 4 It is the A part structure enlarged schematic diagram in the present application; Figure 1 It is the B part structure enlarged schematic diagram in the present application; Figure 5 Figure 1 It is the C part structure enlarged schematic diagram in the present application; Figure 6 It is the C part structure enlarged schematic diagram in the present application; Figure 2 It is the structure schematic diagram of the test frame of the present application; Figure 7 It is the system control flow chart of the present application. Figure 8 BRIEF DESCRIPTION OF DRAWINGS

[0019] 1. Workbench; 2. Test frame; 3. Base; 4. Head plate; 5. Tail plate; 6. Body plate; 7. Guide sleeve; 8. 360-degree protractor; 9. 180-degree protractor; 10. Electronic tensile tester; 11. Flexible film pressure sensor; 12. Controller; 13. No. 1 visual detection component; 14. No. 2 visual detection component; 15. No. 3 visual detection component; 16. Liquid crystal display; 17. Tensile sensor. DETAILED DESCRIPTION

[0020] ​​To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] This invention provides, for example Figures 1-8 The medical catheter bending test fixture shown includes a workbench 1, a test rack 2 on the top of the workbench 1, and a base 3. The base 3 is installed in the middle of the top of the workbench 1. A head plate 4 is installed at one end of the top of the base 3, a tail plate 5 is installed at the other end of the top of the base 3, and a body plate 6 is installed at the end of the top of the base 3 near the tail plate 5. A guide sleeve 7 for passing through a guide tube is installed in the middle of the head plate 4, the tail plate 5, and the body plate 6. The three guide sleeves 7 are located on the same central axis. A 360-degree protractor 8 is installed on the surface of the head plate 4 so that the catheter can pass through. A 180-degree protractor 9 is installed on the surface of the base 3 near the head plate 4, and a 180-degree protractor 9 is also installed on the surface of the base 3 near the body plate 6.

[0022] In one aspect of this embodiment, the guide sleeve 7 in the middle of the head plate 4 is used for the bending section of the guide tube. When the bending section of the guide tube is bent, its deformation in the X-axis direction can be detected by the 180-degree protractor 9, and its deformation in the Y-axis direction can be detected by the 360-degree protractor 8.

[0023] The guide sleeve 7 in the middle of the body 6 is used for the middle section of the guide tube. The degree of bending of the guide tube body can be detected by the 180-degree protractor 9.

[0024] The tail plate 5 is used to position the pull end of the conduit. An electronic tension gauge 10 is installed above the workbench 1 near the tail plate 5. The electronic tension gauge 10 is used to pull the pull line, thereby controlling the conduit to bend. The working end of the electronic tension gauge 10 is electrically connected to a tension sensor 17. The tension sensor 17 can measure the tension value and transmit it to the electronic tension gauge 10. A flexible thin film pressure sensor 11 is installed above the workbench 1 near the head plate 4. The flexible thin film pressure sensor 11 is attached to the surface of the bending section of the conduit and is used to detect the bending force of the conduit.

[0025] The top of the workbench 1 is equipped with a controller 12, a first vision inspection component 13, a second vision inspection component 14, and a third vision inspection component 15. The electronic tensile gauge 10, the flexible thin film pressure sensor 11, the first vision inspection component 13, the second vision inspection component 14, and the third vision inspection component 15 are all electrically connected to the controller 12.

[0026] The detection head of the first vision inspection component 13 is located directly above the 180-degree protractor 9 near the head plate 4, which facilitates the recording of the deformation of the bending section of the guide tube in the X-axis direction. At the same time, the first vision inspection component 13 will transmit the recorded data to the controller 12.

[0027] The detection head of the second vision inspection component 14 is positioned directly opposite the center of the 360-degree protractor 8, which facilitates the recording of the deformation of the bending section of the conduit in the Y-axis direction. At the same time, the second vision inspection component 14 transmits the recorded data to the controller 12.

[0028] The detection head of the third visual inspection component 15 is located directly above the 180-degree protractor 9 near the body 6, which facilitates the recording of the curvature of the duct body. At the same time, the third visual inspection component 15 transmits the recorded data to the controller 12.

[0029] The controller 12 has an integrated LCD screen 16 on its surface. The LCD screen 16 is used to display data transmitted from the electronic force gauge 10, the flexible thin film pressure sensor 11, the first vision detection component 13, the second vision detection component 14 and the third vision detection component 15. The controller 12 can build a closed-loop database by using its built-in program to collect multi-dimensional data such as bending angle, deformation holding ability, bending force, and stroke adjustment.

[0030] On the other hand, this application also provides a testing method for a medical bendable catheter testing fixture, which includes the following steps: S1: Pass the conduit through the guide sleeve 7 in the middle of the tail plate 5 and body plate 6, and use the electronic tension gauge 10 to pull the pull wire to drive the conduit to bend. Record the degree of bending of the conduit body through the third visual detection component 15. S2: Then pass the bending section of the conduit through the guide sleeve 7 in the middle of the head plate 4, and attach the flexible thin film pressure sensor 11 to the surface of the bending section of the conduit. S3: The bending section of the conduit is driven to bend by pulling the pull wire through the electronic tension gauge 10. The deformation of the bending section of the conduit in the X-axis and Y-axis directions is recorded by the first vision detection component 13 and the second vision detection component 14. The bending force is detected by the flexible thin film pressure sensor 11. S4: The controller 12 collects multi-dimensional data such as bending angle, deformation retention capability, bending force, and adjustment stroke, and builds a closed-loop database through its built-in program. It can set the optimal parameter range based on user feedback, which facilitates product testing and optimization.

[0031] The 360° protractor 8, 180° protractor 9, electronic force gauge 10, flexible thin film pressure sensor 11, controller 12, vision inspection component 13, vision inspection component 14, vision inspection component 15, and LCD screen 16 mentioned above are all existing technology products, and their specific structures and functions will not be described in detail here.

[0032] Working principle of this invention: Refer to the instruction manual appendix Figures 1-8In the use of the present application, first, the medical catheter to be tested is inserted through the guide sleeve 7 in the middle of the tail plate 5 and the body plate 6, the pull wire of the catheter is pulled by the electronic tensile meter 10, and the catheter is bent, at this time, the third visual detection assembly 15 records the bending degree of the catheter tube, and transmits the data to the controller 12; Then, the bending section of the catheter is inserted through the guide sleeve 7 in the middle of the head plate 4, and the flexible film pressure sensor 11 is pasted on the surface of the bending section of the catheter, preparing for the subsequent bending force detection; The pull wire is pulled again by the electronic tensile meter 10, and the bending section of the catheter is bent, in this process, the first visual detection assembly 13 and the second visual detection assembly 14 record the deformation of the bending section of the catheter in the X-axis and Y-axis directions respectively, and the flexible film pressure sensor 11 detects the bending force and transmits these data to the controller 12; Finally, the controller 12 receives and processes the data from the electronic tensile meter 10, the flexible film pressure sensor 11 and the visual detection assemblies, through the built-in program, the controller 12 constructs a closed-loop database from these multi-dimensional data (such as bending angle, deformation retention capacity, bending force, bending stroke, etc.), according to the feedback of the user, the best parameter range can be set, so as to facilitate the detection and optimization of the product.

[0033] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A medical catheter bending test fixture, comprising a workbench (1), characterized in that: The workbench (1) is equipped with a test rack (2) on top. The test rack (2) includes a base (3). The base (3) is installed in the middle of the top of the workbench (1). A head plate (4) is installed at one end of the top of the base (3). A tail plate (5) is installed at the other end of the top of the base (3). A body plate (6) is installed at the end of the top of the base (3) near the tail plate (5). A guide sleeve (7) for passing through a guide tube is installed in the middle of the head plate (4), the tail plate (5) and the body plate (6). The three guide sleeves (7) are located on the same central axis. A 360-degree protractor (8) is installed on the surface of the head plate (4) so ​​that the guide tube can pass through. A 180-degree protractor (9) is installed on the surface of the base (3) near the head plate (4). A 180-degree protractor (9) is also installed on the surface of the base (3) near the body plate (6).

2. The medical bend-adjusting catheter testing fixture according to claim 1, characterized in that: The guide sleeve (7) in the middle of the head plate (4) is used for the bending section of the guide tube. When the bending section of the guide tube is bent, its deformation in the X-axis direction can be detected by a 180-degree protractor (9), and its deformation in the Y-axis direction can be detected by a 360-degree protractor (8).

3. The medical bend-adjusting catheter testing fixture according to claim 1, characterized in that: The guide sleeve (7) in the middle of the body plate (6) is used to pass through the middle section of the guide tube. The degree of bending of the guide tube body can be detected by a 180-degree protractor (9).

4. The medical bend-adjusting catheter testing fixture according to claim 1, characterized in that: The tail plate (5) is used to position the pull end of the conduit. An electronic tension gauge (10) is installed above the workbench (1) near the tail plate (5). The electronic tension gauge (10) is used to pull the pull line to control the conduit to bend. The working end of the electronic tension gauge (10) is electrically connected to a tension sensor (17). The tension sensor (17) can measure the tension value and transmit it to the electronic tension gauge (10). A flexible thin film pressure sensor (11) is installed above the workbench (1) near the head plate (4). The flexible thin film pressure sensor (11) is attached to the surface of the bending section of the conduit to detect the bending force of the conduit.

5. The medical bend-adjusting catheter testing fixture according to claim 4, characterized in that: The top of the workbench (1) is equipped with a controller (12), a first vision inspection component (13), a second vision inspection component (14), and a third vision inspection component (15). The electronic tensile gauge (10), the flexible thin film pressure sensor (11), the first vision inspection component (13), the second vision inspection component (14), and the third vision inspection component (15) are all electrically connected to the controller (12).

6. The medical bend-adjusting catheter testing fixture according to claim 5, characterized in that: The detection head of the first visual inspection component (13) is located directly above the 180-degree protractor (9) near the head plate (4), which facilitates recording the deformation of the bending section of the guide tube in the X-axis direction. At the same time, the first visual inspection component (13) will transmit the recorded data to the controller (12).

7. The medical bend-adjusting catheter testing fixture according to claim 5, characterized in that: The detection head of the second vision detection component (14) is positioned directly opposite the center of the 360-degree protractor (8), which facilitates recording the deformation of the bending section of the conduit in the Y-axis direction. At the same time, the second vision detection component (14) transmits the recorded data to the controller (12).

8. The medical bend-adjusting catheter testing fixture according to claim 5, characterized in that: The detection head of the third visual detection component (15) is located directly above the 180-degree protractor (9) near the body (6), which facilitates recording the curvature of the duct body. At the same time, the third visual detection component (15) will transmit the recorded data to the controller (12).

9. A medical bend-adjusting catheter testing fixture according to claim 5, characterized in that: The controller (12) has an integrated liquid crystal display screen (16) on its surface. The liquid crystal display screen (16) is used to display data transmitted from the electronic tensile gauge (10), flexible thin film pressure sensor (11), first vision detection component (13), second vision detection component (14) and third vision detection component (15). The controller (12) can construct a closed-loop database from the collected data on bending angle, deformation retention capability, bending force, and stroke through its built-in program.

10. A testing method for a medical bend-adjusting catheter testing fixture, characterized in that: The medical bend-adjusting catheter testing fixture according to any one of claims 1-9 includes the following steps: S1: Pass the conduit through the guide sleeve (7) in the middle of the tail plate (5) and body plate (6), and use the electronic tension gauge (10) to pull the pull line to drive the conduit to bend. Record the degree of bending of the conduit body through the third visual detection component (15). S2: Pass the bending section of the conduit through the guide sleeve (7) in the middle of the head plate (4), and attach a flexible thin film pressure sensor (11) to the surface of the bending section of the conduit. S3: The bending section of the conduit is driven to bend by pulling the pull wire through the electronic tension gauge (10). The deformation of the bending section of the conduit in the X-axis and Y-axis directions is recorded by the first visual detection component (13) and the second visual detection component (14). The bending force is detected by the flexible thin film pressure sensor (11). S4: The controller (12) collects data on multiple dimensions such as bending angle, deformation retention capability, bending force, and adjustment stroke, and constructs a closed-loop database through its built-in program. It can set the optimal parameter range based on user feedback, which is convenient for product testing and optimization.

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